Spearman秩相关的相容矩阵
Compatible Matrices of Spearman's Rank Correlation
摘要:
在本文中,我们提供了一个否定的答案,一个长期存在的开放问题的兼容性斯皮尔曼的ρ矩阵。斯皮尔曼的rho矩阵和线性相关矩阵的尺寸在文献中的等价性高达9,我们显示不等价的尺寸为12或更高。特别地,我们在两个特征结果中将这个问题与在某些线性投影限制下的随机向量的存在性联系起来。
英文摘要:
In this paper, we provide a negative answer to a long-standing open problem on the compatibility of Spearman's rho matrices. Following an equivalence of Spearman's rho matrices and linear correlation matrices for dimensions up to 9 in the literature, we show non-equivalence for dimensions 12 or higher. In particular, we connect this problem with the existence of a random vector under some linear projection restrictions in two characterization results.
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